Knight KE / Mbed OS Game_Master

游戏王对战板，目前code还是空的

mbed-os/drivers/Timer.cpp@0:9b3d4731edbb, 2018-06-21 (annotated)

Committer:
WFKnight
Date:
Thu Jun 21 13:51:43 2018 +0000
Revision:
0:9b3d4731edbb
UART, RTOS, LED

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WFKnight 0:9b3d4731edbb 1 /* mbed Microcontroller Library
WFKnight 0:9b3d4731edbb 2 * Copyright (c) 2006-2013 ARM Limited
WFKnight 0:9b3d4731edbb 3 *
WFKnight 0:9b3d4731edbb 4 * Licensed under the Apache License, Version 2.0 (the "License");
WFKnight 0:9b3d4731edbb 5 * you may not use this file except in compliance with the License.
WFKnight 0:9b3d4731edbb 6 * You may obtain a copy of the License at
WFKnight 0:9b3d4731edbb 7 *
WFKnight 0:9b3d4731edbb 8 * http://www.apache.org/licenses/LICENSE-2.0
WFKnight 0:9b3d4731edbb 9 *
WFKnight 0:9b3d4731edbb 10 * Unless required by applicable law or agreed to in writing, software
WFKnight 0:9b3d4731edbb 11 * distributed under the License is distributed on an "AS IS" BASIS,
WFKnight 0:9b3d4731edbb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
WFKnight 0:9b3d4731edbb 13 * See the License for the specific language governing permissions and
WFKnight 0:9b3d4731edbb 14 * limitations under the License.
WFKnight 0:9b3d4731edbb 15 */
WFKnight 0:9b3d4731edbb 16 #include "drivers/Timer.h"
WFKnight 0:9b3d4731edbb 17 #include "hal/ticker_api.h"
WFKnight 0:9b3d4731edbb 18 #include "hal/us_ticker_api.h"
WFKnight 0:9b3d4731edbb 19 #include "platform/mbed_critical.h"
WFKnight 0:9b3d4731edbb 20 #include "hal/lp_ticker_api.h"
WFKnight 0:9b3d4731edbb 21
WFKnight 0:9b3d4731edbb 22 namespace mbed {
WFKnight 0:9b3d4731edbb 23
WFKnight 0:9b3d4731edbb 24 Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()), _lock_deepsleep(true) {
WFKnight 0:9b3d4731edbb 25 reset();
WFKnight 0:9b3d4731edbb 26 }
WFKnight 0:9b3d4731edbb 27
WFKnight 0:9b3d4731edbb 28 Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data), _lock_deepsleep(true) {
WFKnight 0:9b3d4731edbb 29 reset();
WFKnight 0:9b3d4731edbb 30 #if DEVICE_LPTICKER
WFKnight 0:9b3d4731edbb 31 _lock_deepsleep = (data != get_lp_ticker_data());
WFKnight 0:9b3d4731edbb 32 #endif
WFKnight 0:9b3d4731edbb 33 }
WFKnight 0:9b3d4731edbb 34
WFKnight 0:9b3d4731edbb 35 Timer::~Timer() {
WFKnight 0:9b3d4731edbb 36 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 37 if (_running) {
WFKnight 0:9b3d4731edbb 38 if(_lock_deepsleep) {
WFKnight 0:9b3d4731edbb 39 sleep_manager_unlock_deep_sleep();
WFKnight 0:9b3d4731edbb 40 }
WFKnight 0:9b3d4731edbb 41 }
WFKnight 0:9b3d4731edbb 42 _running = 0;
WFKnight 0:9b3d4731edbb 43 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 44 }
WFKnight 0:9b3d4731edbb 45
WFKnight 0:9b3d4731edbb 46 void Timer::start() {
WFKnight 0:9b3d4731edbb 47 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 48 if (!_running) {
WFKnight 0:9b3d4731edbb 49 if(_lock_deepsleep) {
WFKnight 0:9b3d4731edbb 50 sleep_manager_lock_deep_sleep();
WFKnight 0:9b3d4731edbb 51 }
WFKnight 0:9b3d4731edbb 52 _start = ticker_read_us(_ticker_data);
WFKnight 0:9b3d4731edbb 53 _running = 1;
WFKnight 0:9b3d4731edbb 54 }
WFKnight 0:9b3d4731edbb 55 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 56 }
WFKnight 0:9b3d4731edbb 57
WFKnight 0:9b3d4731edbb 58 void Timer::stop() {
WFKnight 0:9b3d4731edbb 59 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 60 _time += slicetime();
WFKnight 0:9b3d4731edbb 61 if (_running) {
WFKnight 0:9b3d4731edbb 62 if(_lock_deepsleep) {
WFKnight 0:9b3d4731edbb 63 sleep_manager_unlock_deep_sleep();
WFKnight 0:9b3d4731edbb 64 }
WFKnight 0:9b3d4731edbb 65 }
WFKnight 0:9b3d4731edbb 66 _running = 0;
WFKnight 0:9b3d4731edbb 67 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 68 }
WFKnight 0:9b3d4731edbb 69
WFKnight 0:9b3d4731edbb 70 int Timer::read_us() {
WFKnight 0:9b3d4731edbb 71 return read_high_resolution_us();
WFKnight 0:9b3d4731edbb 72 }
WFKnight 0:9b3d4731edbb 73
WFKnight 0:9b3d4731edbb 74 float Timer::read() {
WFKnight 0:9b3d4731edbb 75 return (float)read_us() / 1000000.0f;
WFKnight 0:9b3d4731edbb 76 }
WFKnight 0:9b3d4731edbb 77
WFKnight 0:9b3d4731edbb 78 int Timer::read_ms() {
WFKnight 0:9b3d4731edbb 79 return read_high_resolution_us() / 1000;
WFKnight 0:9b3d4731edbb 80 }
WFKnight 0:9b3d4731edbb 81
WFKnight 0:9b3d4731edbb 82 us_timestamp_t Timer::read_high_resolution_us() {
WFKnight 0:9b3d4731edbb 83 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 84 us_timestamp_t time = _time + slicetime();
WFKnight 0:9b3d4731edbb 85 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 86 return time;
WFKnight 0:9b3d4731edbb 87 }
WFKnight 0:9b3d4731edbb 88
WFKnight 0:9b3d4731edbb 89 us_timestamp_t Timer::slicetime() {
WFKnight 0:9b3d4731edbb 90 us_timestamp_t ret = 0;
WFKnight 0:9b3d4731edbb 91 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 92 if (_running) {
WFKnight 0:9b3d4731edbb 93 ret = ticker_read_us(_ticker_data) - _start;
WFKnight 0:9b3d4731edbb 94 }
WFKnight 0:9b3d4731edbb 95 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 96 return ret;
WFKnight 0:9b3d4731edbb 97 }
WFKnight 0:9b3d4731edbb 98
WFKnight 0:9b3d4731edbb 99 void Timer::reset() {
WFKnight 0:9b3d4731edbb 100 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 101 _start = ticker_read_us(_ticker_data);
WFKnight 0:9b3d4731edbb 102 _time = 0;
WFKnight 0:9b3d4731edbb 103 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 104 }
WFKnight 0:9b3d4731edbb 105
WFKnight 0:9b3d4731edbb 106 Timer::operator float() {
WFKnight 0:9b3d4731edbb 107 return read();
WFKnight 0:9b3d4731edbb 108 }
WFKnight 0:9b3d4731edbb 109
WFKnight 0:9b3d4731edbb 110 } // namespace mbed